The terms and standards that appear on every datasheet, explained without the jargon.
Electrical terms: Ah, Wh, C-rate, SOC, DOD
Amp-hours is charge, watt-hours is energy, C-rate is current relative to capacity, SOC and DOD describe where in the cycle you are.
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Standards and certifications
UN 38.3 covers transport, IEC 62619 industrial cells, UL 2580 traction, and CE/UKCA marks the market access.
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Questions
Short answers to the ones that come up most.
What does C-rate mean?
Current relative to capacity: 1C on a 100Ah pack is 100A. Exceeding the cell rating shortens life and trips the BMS.
What is the difference between SOC and DOD?
They are opposites: 80% state of charge means 20% depth of discharge.
Which standard do I need for shipping?
UN 38.3 — every lithium shipment needs its test summary.
